Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2026PhysicsChapterActual

In the given circuit, a 20 V ideal battery is connected across the terminals P and S. An ideal ammeter is connected between nodes Q and R. Determine the reading of the ammeter.

Options

  1. A0 A
  2. B2 A
  3. C4 A
  4. D6 A

Correct answer

B. 2 A

Step-by-step solution

An ideal ammeter has zero resistance, so it acts as a short circuit between nodes Q and R. This means nodes Q and R are at the same potential. The circuit can be simplified as two parallel combinations in series. The 2 and 4 resistors are in parallel, and the 6 and 3 resistors are in parallel. The equivalent resistance of the first parallel combination (between P and Q/R) is: R₁ = 2 4 2 + 4 = 8 6 = 4 3 The equivalent resistance of the second parallel combination (between Q/R and S) is: R₂ = 6 3 6 + 3 = 18 9 = 2 The

Practice Chapter on Quantrex Academy →

More from Chapter

A solid spherical body of radius R , density , and specific heat capacity s is initially at temperature T₀ . It is placed in a vacuum chamber at absolute zero and cools by emitting 2026A straight canal has motorboats departing from two terminals at opposite ends. The motorboats depart at regular intervals of T minutes in both directions and travel at a constant s 2026A wooden crate is released from rest at the top of a ramp inclined at 37^ to the horizontal. When the ramp is perfectly smooth, the crate reaches the bottom with a speed v . When t 2026A uniform horizontal beam of mass 6 kg and length L is hinged to a vertical wall at one end. The other end is supported by a light inextensible wire attached to the same wall, maki 2026A bullet P of mass 30 g moving with a speed of 200 m/s penetrates a target and comes to rest after travelling a distance of 10 cm inside it. Another bullet Q of mass 20 g moving wi 2026A small block of mass m is placed at the highest point of a smooth fixed sphere of radius R . It is given a horizontal initial speed v₁ such that it slides down the surface. The bl 2026A block of mass 2 kg is projected with an initial speed of 14 m/s on a rough horizontal surface. The coefficient of kinetic friction between the block and the surface is 0.2 . Afte 2026A uniform horizontal circular disc of mass M and radius R is rotating freely about a vertical axis passing through its center at an angular speed of 40 rpm . Two small blocks, each 2026 Full Chapter list All NEET PYQs